Roswell

Ten years before "Twilight" there was this teen romantic series where a teenage girl falled in love with an alien. There was a lot of teenage angst and not much that happened at first, but at the end of the first season the show started to embrace it's science fiction roots and became actually rather watchable. It is not as bad as one could expect and the characterization is actually well done. The acting was above average too, but it was sometimes hard to get through all those long "deep" romantic conversations between the two leads. The music was also very modern and up to date at the time. It survived three seasons when it was expected to only last one due to devoted fans and it ended with an okay, but open ending. It is still enormously more satisfying than what "Twilight" ever was.